<template>
  <div class="home-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" fixed>
      <van-button
        class="search-btn"
        slot="title"
        type="info"
        size="small"
        round
        icon="search"
        to="/search"
      >搜索</van-button>
</van-nav-bar>
    <!-- /导航栏 -->
<van-tabs class="channel-tabs" v-model="active" animated swipeable>
    <van-tab
    v-for="channel in channels"
    :key="channel.id"
    :title="channel.name"
     >
     <article-list :channel="channel"/>
     </van-tab>
    <div slot="nav-right" class="placeholder">
       </div>
    <div slot="nav-right" class="hamburger-btn" @click="isChannelEditShow = true">
        <i class="toutiao toutiao-gengduo"></i>
    </div>
</van-tabs>
  <!-- 频道编辑 -->
  <van-popup
  class="edit-channel-popup"
  v-model="isChannelEditShow"
  position="bottom"
  :style="{ height: '100%' }"
  closeable
  close-icon-position="top-left"
>
<channel-edit
:my-channels="channels"
 :active ="active"
 @update-active="onUpdateActive" />
</van-popup>
  </div>
</template>

<script>
import { getUserChannels } from '@/api/user'
import ArticleList from './components/article-list'
import ChannelEdit from './components/channel-edit'
import { mapState } from 'vuex'
import { getItem } from '@/utils/storage/'
export default {
  name: 'HomeIndex',
  components: {
    ArticleList,
    ChannelEdit
  },
  props: {},
  data () {
    return {
      active: 1,
      channels: [],
      isChannelEditShow: false
    }
  },
  computed: {
    ...mapState(['user'])
  },
  watch: {},
  created () {
    this.loadChannels()
  },
  mounted () {},
  methods: {
    async loadChannels () {
      try {
        let channels = []
        if (this.user) {
          const { data } = await getUserChannels()
          channels = data.data.channels
        } else {
          const localChannels = getItem('TOUTIAO_CHANNELS')
          if (localChannels) {
            channels = localChannels
          } else {
            const { data } = await getUserChannels()
            channels = data.data.channels
          }
        }
        this.channels = channels
      } catch (err) {
        this.$toast('获取频道列表数据失败')
      }
    },
    onUpdateActive (index, isChannelEditShow = true) {
      this.active = index
      this.isChannelEditShow = false
    }

  }
}
</script>

<style scoped lang="less">
.home-container {
  padding-bottom: 100px;
  padding-top: 180px;
 /deep/ .van-nav-bar__content {
     background-color: #3296fa;
  }
  /deep/.van-nav-bar__title {
    max-width: unset;
  }
  .search-btn {
    width: 555px;
    height: 64px;
    background-color: #5babfb;
    border: none;
    font-size: 28px;
    .van-icon {
      font-size: 32px;
    }
  }
}
/deep/ .channel-tabs {
.van-tab {
  border-right: 1px solid #EDEFF3;
  min-width: 200px;
  height: 80px;
  .van-tab__text {
    font-size: 27px;
    color: #777777;
  }
}

.van-tab--active .van-tab__text{
  color: #333 !important;
}
.van-tabs__line {
  width:31px !important;
  height:6px;
  background:rgba(50,150,250,1);
  border-radius:3px;
  bottom: 8px;
}
.van-tabs__nav {
  padding: 0;
}
.placeholder {
  flex-shrink: 0;
  width: 66px;
  height: 82px;
}
}
.hamburger-btn {
  position: fixed;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 66px;
  height: 82px;
  background-color: #fff;
  opacity: 0.902;
  i.toutiao {
    font-size: 33px;
  }
  &:before {
    content: "";
    position: absolute;
    left: 0;
    width: 1px;
    height: 100%;
    background-image: url(~@/assets/gradient-gray-line.png);
    background-size: contain;
  }
}
 /deep/ .van-tabs__wrap {
  position: fixed;
  top: 92px;
  z-index: 2;
  width: 100%;
}
</style>
